Sash-fastener.



No. 667,420. Patented Feb. 5, 19m.

J. E. BLACKBURN.

SASH FASTENER.

(Application filed July 11) 1900.)

(No Model.)

llllllll lxhbnuou JESSE E. BLACKBURN, OF STEPHENS CHAPEL, TENNESSEE.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 667,420, dated February 5, 1901.

Application filed JulylO, 1900. Serial No. 23,146. (No model.)

10 (all whom it may concern.-

Be it known that I, JEssE E. BLACKBURN, a citizen of the United States, residing at Stephens Chapel, in the county of Bledsoe, State of Tennessee, have invented certain new and useful Improvements in Sash-Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to window-fastenings in general, and more particularly to that class employed for securing window-sashes at different elevations, the object of the invention being to provide a cheap and simple construction in which the window may be held at any desired point and in which the fastening may be engaged and disengaged with respect to the window-sash as desired.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar partsin the several views, Figure l is a transverse section of a portion of a window-sash and an adjacent portion of a window-frame and showing the construction and arrangement of the fastener of the present invention, the bolt being in its operative position. Fig. 2 is a view showing the bolt in its inoperative position. Fig. 3 is a view similar to Fig. 2 and showing a modification of the invention.

Referring now to the drawings and more particularly to Figs. 1 and 2, 5 represents a portion of a window-frame having the usual blind-stop 6 and dividing-bead 7, the fastener being disposed in a recess 8, formed in the face of the frame, said recess extending entirely across the slideway of the lower window-sash and through the bead 7. In the recess S is directly arranged a casing 9, comprising a base-plate 10, which lies flush with the window-frame and from which projects rearwardly the casing proper, which is substantially L-shaped and comprisesa tubular stem 11, having a longitudinal slot 12 at one side,which communicates with the lateral extension 13 of the casing. In the casing is disposed a bolt 15, comprising a central web portion 16, at one end of which is an outwardlyprojecting portion which forms the engaging tongue 17 of the bolt, and this tongue is adapt "10, and at'its upper end is a cross-plate 23,

which projects laterally beyond the sides of the post and is adapted to lie flush with the upper face of plate 10 in a recess therein.

Through the base of the recess 24 of theplate 10 there is formed a preferably rectangular opening 25, through which is passed a spring-catch 26, consisting of a wire, one end of which is secured to the outer face of the tubular portion or stem 11 of the casing, while beyond the recess 24 the wire is bent laterally and then outwardly and is continued through a second rectangular opening 28 in the cross-plate 23. The laterally-extending portion 29 of the latch-wire is so positioned that when the thumb post 20 is pushed in to its limit said portion 29 will lie beyond the cross-plate 23, and the spring of the wire causes the wire to lie yieldably with this laterally-extending portion upon the outer face of the cross-plate, thus holding the thumbpost against outward movement and correspondingly holding the latch or bolt tongue.

When the thumb-piece is pressedinwardly, it compresses a helical spring 30, disposed between the inner end of the post and the bottom of the tubular portion of the casing, and thus it the latch-spring be moved to carry its laterally-extending portion 29 from engagement with the cross-plate then the helical spring will act to move the bolt outwardly and throw the bolt-tongue into operative position to engage a recess 32 in the side of the window-frame to hold the frame from movement. If the thumb-piece be then pressed inwardly, the side of the opening in the cross plate will press against the slanting outer end of the latch-spring and will move the spring laterally until the cross-plate has passed into the recess in the plate 10, when the spring of the latch will cause it to again move to its if") l operative position to hold the bolt inactive. It will thus be seen that the sash may be provided with any number of recesses for engagement by the bolt-tongue to hold the sash at difierent elevations and that the bolt may be readily operated for engagement or disengagement of the recesses. In Fig. 3 of the drawings there is shown a similar construction, in which, however, the thumb-post-29- is slotted longitudinally, and in this slot is disposed a spring-wire 35, one end of which is engaged with the post, the wire being then continued upwardly and slantingly to project beyond the side of the post adjacent its upper end and being then bent laterally to lie transversely of the post and in the slot thereof, after which it is bent outwardly to project with its free end out of the end of the slot and through the opening in the plate 10, through which the post projects. A recess 36 is formed in the inner wall of the tubular stem of the casing and below the plate 10 and in such position that when the thumb-post is pushed inwardly the slanting portion of the latch-spring is traversed by the edge of the opening 22, which acts to press the latchspring into the slot of the post, and when the post has been pushed in to the proper extent to draw the bolt-tongue the latch-spring moves outwardly and engages the recess in the wall of the tubular stem of the casing and holds the bolt against outward movement under the tendency of the helical spring 30, disposed between the inner end of the thumbpost and the base of the stem of the casing.

From the above description it will be seen that a simple and cfticient form of fastener has been provided, and it will be understood that by forming the openings in the base-plate and cross-plate of the construction shown in Figs. 1 and 2 and in passing the latch-wire through these openings the outward movement of the wire is limited, so that there is no danger of excessively bending the latch to a point that would make it inoperative.

What is claimed is- A window-fastening comprising a casingineluding spaced tubular portions and a communicating passage, a bolt in the passage having a bolt tongue at one end operable in one tubular portion and a thumb-post at the opposite end and slidably disposed in the opposite tubular portion, a cross-plate carried by the thumb-post and having an opening, said casing also including a base-plate having an opening alining with the opening of the cross-plate, and a spring-latch passed through the openings and secured at its inner end to the casing, said latch having an engaging portion to lie against the outer face of the cross-plate and hold the bolt inoperative, and means for moving the bolt operatively when released by the latch.

In testimony whereof I sign my name, in the presence of two witnesses, this 7th day of May, 1900.

JESSE E. BLACKBURN.

Witnesses:

Jon W. GossE, J. A. STEPHENS. 

